CN104358560B - Take downhole flow testing arrangement of protection machanism - Google Patents
Take downhole flow testing arrangement of protection machanism Download PDFInfo
- Publication number
- CN104358560B CN104358560B CN201410634872.3A CN201410634872A CN104358560B CN 104358560 B CN104358560 B CN 104358560B CN 201410634872 A CN201410634872 A CN 201410634872A CN 104358560 B CN104358560 B CN 104358560B
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- differential pressure
- seat
- pressure pick
- check valve
- orifice plate
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- 238000012360 testing method Methods 0.000 title claims abstract description 25
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 33
- 238000010079 rubber tapping Methods 0.000 claims description 24
- 239000000203 mixture Substances 0.000 claims description 4
- 238000005259 measurement Methods 0.000 abstract description 8
- 238000009434 installation Methods 0.000 abstract description 5
- 239000011148 porous material Substances 0.000 abstract description 3
- 239000012530 fluid Substances 0.000 description 15
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 230000001746 atrial effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/20—Displacing by water
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/01—Devices for supporting measuring instruments on drill bits, pipes, rods or wirelines; Protecting measuring instruments in boreholes against heat, shock, pressure or the like
- E21B47/017—Protecting measuring instruments
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geophysics (AREA)
- Check Valves (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention particularly provides a downhole flow testing device with a protection mechanism, which comprises a shell, wherein an axial channel is arranged in the shell, a pore plate is arranged in the axial channel, a front pressure taking port and a rear pressure taking port are respectively arranged on the shell on the left side and the shell on the right side of the pore plate, a left pressure guiding pipe and a right pressure guiding pipe are respectively welded on the front pressure taking port and the rear pressure taking port, the left pressure guiding pipe and the right pressure guiding pipe are respectively connected with a left base and a right base, a corrugated pipe assembly, a check valve assembly and a differential pressure sensor assembly are sequentially connected between the left base and the right base from top to bottom, and pressure guiding holes communicated with the corrugated pipe assembly, the check valve assembly and the differential pressure sensor assembly are respectively arranged on the. The invention has compact structure, convenient installation and strong anti-interference capability, and can realize accurate measurement of underground small flow for a long time in a high-temperature and high-pressure environment.
Description
Technical field
Present invention relates particularly to a kind of downhole flow test device with protection mechanism, suitable for oilfield intelligent water injection technology
The test device of middle underground survey injection flow.
Background technology
At present, the device of many measurement fluid flows, such as vortex-shedding meter, ultrasonic flow in the prior art be present
Meter, electromagnetic flowmeter and temperature flow gauge etc..Wherein, vortex-shedding meter is to be shaken by measuring caused by fluid process or shock
Dynamic frequency realizes the measurement of flow；Ultrasonic flow timing receives different fluid flow velocity according to ultrasonic transmission speed to be influenceed, measurement
Two probe existing for the time difference and draw fluid flow；Electromagnetic flowmeter is by measuring electrical conduction current according to the law of electromagnetic induction
Caused induced electromotive force draws fluid flow to body during cutting magnetic induction line in magnetic field；Temperature flow gauge is by measuring fluid
The change of temperature draws fluid flow.
Each above-mentioned existing flowmeter and its corresponding flow rate test method have its different applicable elements and
Use range, some flowmeters are not suitable for applying under hyperbaric environment, and some flowmeter volumes are excessive, it is impossible to installed in underground,
Some flows, and can not be in underground prolonged application in respect of movable part, and some is low to small water testing precision, it is impossible to meets oil field
Fine water filling individual layer is with the small fine measuring requirement of fluence.
Therefore, it is necessary to a kind of flowermeter that can measure underground water-injection flow is provided, to overcome drawbacks described above.
The content of the invention
The purpose of the present invention is to overcome flowmeter narrow application range in the prior art, it is impossible to meets the fine water filling individual layer in oil field
The problem of with fluence small fine measuring requirement.
Therefore, the invention provides a kind of downhole flow test device with protection mechanism, including housing, in the housing
It is provided with provided with axial passage, and in its axial passage on the housing of orifice plate, the orifice plate or so and is respectively equipped with preceding pressure tappings with after
Pressure tappings, two connecting pipes in left and right, described left and right two connecting pipes point are respectively welded on the preceding pressure tappings and rear pressure tappings
Left pedestal and Right socle are not connected, are from top to bottom connected with bellows component, unidirectional between the left pedestal and Right socle in turn
Valve module and differential pressure pick-up component, diaphragm for passageway component, check valve assembly are provided with the left pedestal and Right socle
With the pressure guide hole of differential pressure pick-up component.
The distance of above-mentioned preceding pressure tappings and orifice plate is not less than 10 times of orifice plate diameter, and rear pressure tappings are not less than with orifice plate distance
5 times of orifice plate diameter.
The axial passage of above-mentioned orifice plate and housing is perpendicular.
Above-mentioned bellows component is by corrugated header, bellows pillar, and installed in corrugated header and bellows pillar it
Between bellows composition.
Above-mentioned check valve assembly includes two structure identical check valves, and two check valves it is in opposite direction be arranged on a left side
Between pedestal and Right socle.
Above-mentioned check valve include unidirectional valve union, be connected with unidirectional valve union one-way valve spring mounting seat, installed in list
To the one-way valve spring in valve spring mounting seat, the nonreturn valve core being connected with one-way valve spring, the check valve for fixing nonreturn valve core
Core print seat and the one-way valve seat being connected with check valve core print seat.
Above-mentioned differential pressure pick-up component is by the left seat of differential pressure pick-up, the right seat of differential pressure pick-up, and is arranged on differential pressure sensing
Differential pressure pick-up composition between the left seat of device and the right seat of differential pressure pick-up.
Pad is provided between above-mentioned differential pressure pick-up both ends and the left seat of differential pressure pick-up and the right seat of differential pressure pick-up.
It is fixedly connected between above-mentioned left pedestal and Right socle by support tube.
The mounting hole one, unidirectional for installing for installing bellows component is provided with above-mentioned left pedestal and Right socle
The mounting hole two and mounting hole three of positive and negative two check valves in valve module, and for installing the mounting hole four of differential pressure pick-up.
Beneficial effects of the present invention：
(1) this downhole flow test device with protection mechanism provided by the invention is compact-sized, easy for installation, along axle
Installed to size, occupancy radial dimension is small, can be easy to be integrated in the digital injection well downhole flow regulator in underground.
(2) the downhole flow test device with protection mechanism is anti-interference and voltage endurance capability is strong, and it can be under hyperbaric environment
The measurement of downhole flow is realized, and adjustable orifice board diameter adjusts testing range with differential pressure pick-up parameter, disclosure satisfy that well
The testing requirement of lower fluid flow.
(3) sensitivity of differential pressure pick-up is very high in the present invention, can accurately monitor smaller pressure caused by low discharge
Difference, therefore the flow of fluid is can accurately measure, rill can not accurately be measured by particularly being limited in other flowmeters by measuring principle
In amount, there is greater advantage.
The present invention is described in further details below with reference to accompanying drawing.
Brief description of the drawings
Fig. 1 is the structure chart of the downhole flow test device of the invention with protection mechanism.
Fig. 2 is the profile of the downhole flow test device of the invention with protection mechanism.
Fig. 3 is the differential pressure pick-up and its protection modular construction of the downhole flow test device of the invention with protection mechanism
Figure.
Fig. 4 is along the bellows profile in D-D directions in Fig. 3.
Fig. 5 is along the check valve profile in C-C directions in Fig. 3.
Fig. 6 is along the check valve profile in B-B directions in Fig. 3.
Fig. 7 is along the differential pressure pick-up component profile in B-B directions in Fig. 3.
Fig. 8 is along the left pedestal profile in E-E directions in Fig. 3.
Description of reference numerals：1st, housing；2nd, connecting pipe；3rd, bellows component；4th, check valve assembly；5th, differential pressure pick-up group
Part；6th, support tube；7th, left pedestal；8th, Right socle；9th, orifice plate；10th, left connector；11st, right connector；12nd, corrugated header；13、
Bellows；14th, bellows pillar；15th, unidirectional valve union；16th, one-way valve spring mounting seat；17th, one-way valve spring；18th, it is unidirectional
Valve element；19th, check valve core print seat；20th, one-way valve seat；21st, the left seat of differential pressure pick-up；22nd, differential pressure pick-up；23rd, differential pressure pick-up
Right seat；24th, pad；25th, mounting hole one；26th, mounting hole two；27th, mounting hole three；28th, mounting hole four；29th, pressure guide hole；30th, note
Oilhole；201st, preceding pressure tappings；202nd, rear pressure tappings.
Embodiment
Embodiment 1：
Overcome flowmeter narrow application range in the prior art, it is impossible to meet the fine water filling individual layer in oil field with small fine of fluence
The problem of measuring requirement, present embodiments provide a kind of a kind of downhole flow with protection mechanism as shown in Figure 1, Figure 2 and Figure 3
Test device, including housing 1, the housing 1 is interior to be provided with axial passage, and is provided with orifice plate 9, the orifice plate 9 in its axial passage
Preceding pressure tappings 201 and rear pressure tappings 202 are respectively equipped with the housing 1 of left and right, on the preceding pressure tappings 201 and rear pressure tappings 202
Two connecting pipes 2 in left and right are respectively welded, two connecting pipes 2 in the left and right connect left pedestal 7 and Right socle 8, the left side respectively
From top to bottom it is connected with bellows component 3, check valve assembly 4 and differential pressure pick-up component 5 between pedestal 7 and Right socle 8 in turn,
Diaphragm for passageway component 3, check valve assembly 4 and differential pressure pick-up component 5 are provided with the left pedestal 7 and Right socle 8
Pressure guide hole 29.
The course of work of the downhole flow test device with protection mechanism is as follows：Fluid enters from the left end of housing 1 should
The axial passage of downhole flow test device, fluid are formed after orifice plate 9 because of the throttle effect of orifice plate 9 before and after orifice plate 9
Chock pressure difference, pressure at both sides are delivered to the both ends of differential pressure pick-up component 5 by connecting pipe 2, and now differential pressure pick-up component 5 is examined
The pressure difference before and after orifice plate 9 is measured, the signal of the detection of differential pressure pick-up component 5 is handled by external processing apparatus, so as to essence
The really flow of measurement fluid.
In addition, pressure difference is excessive before and after orifice plate 9 or the damage that has larger pressure pulse to cause differential pressure pick-up component 5
It is bad, because differential pressure pick-up component 5 is identical by pressure guide hole 29 with bellows component 3, check valve assembly 4, therefore, pass through ripple
Tube assembly 3 can effectively compensator or trimmer pressure pulse, the pressure at both sides of differential pressure pick-up component 5 can be balanced by check valve assembly 4, so as to protect
Protect differential pressure pick-up component 5.
Embodiment 2：
On the basis of embodiment 1, the housing 1 is in cylindrical, and abacus 9 is opened up in the middle part of its internal axial channel,
And the axial passage of the orifice plate 9 and housing 1 is perpendicular, fluid forms throttle by orifice plate 9；Two are opened up on housing 1
Pressure tappings, be preceding pressure tappings 201 and rear pressure tappings 202 respectively before and after orifice plate 9, two connecting pipes 2 respectively with preceding pressure tappings
201 and rear pressure tappings 202 by being welded to connect；The distance of the preceding pressure tappings 201 and orifice plate 9 is straight not less than 10 times of orifice plate 9
Footpath, rear pressure tappings 202 are with orifice plate 9 apart from the diameter of orifice plate 9 not less than 5 times；Described two ends of connecting pipe 2 are respectively arranged with a left side
Connector 10 and right connector 11, pass through left connector 10 and right connector 11 between left pedestal 7 and Right socle 8 and connecting pipe 2
Connection.
As shown in figure 4, the bellows component 3 is by corrugated header 12, bellows pillar 14, and installed in corrugated header
Bellows 13 between 12 and bellows pillar 14 forms；Bellows component 3 is distinguished by corrugated header 12 and bellows pillar 14
Be connected with left pedestal 7 and Right socle 8, between sealed by O-ring seal；Bellows 13 is arranged on corrugated header 12, ripple
Line is managed and protected pipe 14 and is threadedly coupled with corrugated header 12, is sealed by O-ring seal；Corrugated header 12 and the center of bellows pillar 14
There is passage can be by the pressure transmission of left and right two connecting pipes 2 to bellows 13.
As shown in Figure 5, Figure 6, the check valve assembly 4 includes two structure identical check valves, and two check valve sides
It is arranged on to opposite between left pedestal 7 and Right socle 8, and the check valve includes unidirectional valve union 15 and unidirectional valve union
The one-way valve spring mounting seat 16 of 15 connections, one-way valve spring 17 and check valve in one-way valve spring mounting seat 16
The nonreturn valve core 18 of the connection of spring 17, fix the check valve core print seat 19 of nonreturn valve core 18 and be connected with check valve core print seat 19 unidirectional
Valve seat 20；Check valve is connected with left pedestal 7 and Right socle 8 respectively by unidirectional valve union 15 and one-way valve seat 20, between pass through O
Type sealing ring seals；Check valve core print seat 19 is connected through a screw thread with unidirectional valve union 15, one-way valve seat 20, between by O-shaped close
Seal seals；As shown in figure 5, the one-way valve spring 17 that nonreturn valve core 18 has the left side of one-way valve seat 20 supports, when left pressure is big
Reach spring threshold value in the value of right atrial pressure, nonreturn valve core 18 automatically opens up, and balances both sides pressure difference, protects differential pressure pick-up 22；
And as shown in fig. 6, the one-way valve spring 17 that nonreturn valve core 18 has the right side of one-way valve seat 20 supports, when right atrial pressure is pressed more than left side
The value of power reaches the threshold value of one-way valve spring 17, and nonreturn valve core 18 automatically opens up, and balances both sides pressure difference, protects differential pressure pick-up 22.
As shown in fig. 7, the differential pressure pick-up component 5 is by the left seat 21 of differential pressure pick-up, the right seat 23 of differential pressure pick-up, and
The differential pressure pick-up 22 being arranged between the left seat 21 of differential pressure pick-up and the right seat 23 of differential pressure pick-up forms；Differential pressure pick-up component
5 are connected with left pedestal 7 and Right socle 8 respectively by the left seat 21 of differential pressure pick-up and the right seat 23 of differential pressure pick-up, pass through O between each other
Type sealing ring seals；Differential pressure pick-up 22 is arranged on the cavity that the left seat 21 of differential pressure pick-up is formed with the left seat 34 of differential pressure pick-up
It is interior, sealed by O-ring seal, between the both ends of differential pressure pick-up 22 and the left seat 21 of differential pressure pick-up and the right seat 23 of differential pressure pick-up
Provided with pad 24；The left seat 21 of differential pressure pick-up has passage with the right center of seat 23 of differential pressure pick-up so that differential pressure pick-up 22 can be visited
Measure the pressure difference of the both sides of orifice plate 9.
As shown in figure 8, it is fixedly connected between the left pedestal 7 and Right socle 8 by support tube 6；
Be provided with the left pedestal 7 and Right socle 8 for bellows component 3 is installed mounting hole 1, for pacifying
The mounting hole 2 26 and mounting hole 3 27 of positive and negative two check valves in check valve assembly 4 are filled, and for installing differential pressure pick-up 5
Mounting hole 4 28；The pressure guide hole 29 set on the left pedestal 7 and Right socle 8 by mounting hole 1, mounting hole 2 26, installation
Hole 3 27 connects with mounting hole 4 28；Pressure guide hole 29 enables differential pressure pick-up component 5 to detect the pressure difference before and after orifice plate 9, and
And bellows component 3, check valve 4 and the side of differential pressure pick-up component 5 two are connected by pressure guide hole 29；And the left pedestal 7 and the right side
Pedestal 8 is additionally provided with oil filler point 30, and oil filler point 30 is used for filling grease into pressure guide hole 29, connecting pipe 2, compensator or trimmer pressure transmission,
Protect differential pressure pick-up 22.
In summary, the downhole flow test device of the invention with protection mechanism is compact-sized, easy for installation, vertically chi
Very little installation, occupancy radial dimension is small, can be easy to be integrated in the digital injection well downhole flow regulator in underground；The flow testing device is anti-interference and resistance to
Pressure energy power is strong, and it can realize the measurement of downhole flow, and the aperture of adjustable pore plate 9 and differential pressure pick-up 22 under hyperbaric environment
Parameter adjust testing range, disclosure satisfy that the testing requirement of downhole fluid flow；In addition, the sensitivity of differential pressure pick-up 22
It is very high, can accurately it monitor compared with small pressure difference caused by low discharge, therefore the present invention can accurately measure the flow of fluid, especially
It is to be limited and accurately can not measured on low discharge by measuring principle in other flowmeters, there is greater advantage, and pass through bellows
Component 3, check valve assembly 4 can play a very good protection to differential pressure pick-up 22, adapt to the long-term measurement request in underground.
It is exemplified as above be only to the present invention for example, do not form the limitation to protection scope of the present invention, it is all
It is to be belonged to the same or analogous design of the present invention within protection scope of the present invention.
Claims (4)
1. a kind of downhole flow test device with protection mechanism, including housing (1), it is characterised in that：Set in the housing (1)
There is axial passage, and orifice plate (9) is provided with its axial passage, preceding pressure is respectively equipped with the housing (1) of orifice plate (9) left and right
Mouthful (201) and rear pressure tappings (202), two are respectively welded or so on the preceding pressure tappings (201) and rear pressure tappings (202) and is led
Pressure pipe (2), two connecting pipes (2) in the left and right connect left pedestal (7) and Right socle (8), the left pedestal (7) and right base respectively
Bellows component (3), check valve assembly (4) and differential pressure pick-up component (5), institute are from top to bottom connected with turn between seat (8)
State and diaphragm for passageway component (3), check valve assembly (4) and differential pressure pick-up group are provided with left pedestal (7) and Right socle (8)
The pressure guide hole (29) of part (5)；
The bellows component (3) is by corrugated header (12), bellows pillar (14) and installed in corrugated header (12) and ripple
Line manages and protects bellows (13) composition between pipe (14)；
The check valve assembly (4) includes two structure identical check valves, and two check valves it is in opposite direction be arranged on a left side
Between pedestal (7) and Right socle (8)；The list that the check valve includes unidirectional valve union (15), is connected with unidirectional valve union (15)
One-way valve spring (17) and one-way valve spring to valve spring mounting seat (16), in one-way valve spring mounting seat (16)
(17) nonreturn valve core (18) of connection, fixed nonreturn valve core (18) check valve core print seat (19) and be connected with check valve core print seat (19)
One-way valve seat (20)；
The differential pressure pick-up component (5) is by the left seat of differential pressure pick-up (21), the right seat of differential pressure pick-up (23), and is arranged on difference
Differential pressure pick-up (22) composition between the left seat of pressure sensor (21) and the right seat of differential pressure pick-up (23)；
It is fixedly connected between the left pedestal (7) and Right socle (8) by support tube (6)；The left pedestal (7) and Right socle
(8) mounting hole one (25), positive and negative in check valve assembly (4) for installing for installing bellows component (3) is provided with
The mounting hole two (26) and mounting hole three (27) of two check valves, and for installing the mounting hole four of differential pressure pick-up (22)
(28)。
2. the downhole flow test device with protection mechanism as claimed in claim 1, it is characterised in that：The preceding pressure tappings
(201) distance with orifice plate (9) is not less than 10 times orifice plate (9) diameter, and rear pressure tappings (202) and the distance of orifice plate (9) be not small
In 5 times of orifice plates (9) diameter.
3. the downhole flow test device with protection mechanism as claimed in claim 1, it is characterised in that：The orifice plate (9) with
The axial passage of housing (1) is perpendicular.
4. the downhole flow test device with protection mechanism as claimed in claim 1, it is characterised in that：The differential pressure pick-up
(22) pad (24) is provided between both ends and the left seat of differential pressure pick-up (21) and the right seat of differential pressure pick-up (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410634872.3A CN104358560B (en) | 2014-11-12 | 2014-11-12 | Take downhole flow testing arrangement of protection machanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410634872.3A CN104358560B (en) | 2014-11-12 | 2014-11-12 | Take downhole flow testing arrangement of protection machanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104358560A CN104358560A (en) | 2015-02-18 |
| CN104358560B true CN104358560B (en) | 2017-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410634872.3A Active CN104358560B (en) | 2014-11-12 | 2014-11-12 | Take downhole flow testing arrangement of protection machanism |
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| Country | Link |
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| CN (1) | CN104358560B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106640044A (en) * | 2016-11-14 | 2017-05-10 | 成都欧米伽电子技术有限公司 | Pulse generator fixing and protecting device |
| CN109267990A (en) * | 2017-07-17 | 2019-01-25 | 中国石油化工股份有限公司 | A kind of downhole flow metering device |
| CN109282864B (en) * | 2018-08-19 | 2020-03-20 | 中国海洋石油总公司 | Downhole V-cone gas flow testing device |
| CN114278278B (en) * | 2022-01-13 | 2023-10-24 | 上海中核维思仪器仪表股份有限公司 | Protection device for oil field flowmeter |
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| CN204312051U (en) * | 2014-11-12 | 2015-05-06 | 中国石油天然气股份有限公司 | Take downhole flow testing arrangement of protection machanism |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2625852Y (en) * | 2003-07-18 | 2004-07-14 | 项家从 | Single-parameter or multi-parameter metering integral wedge-shaped flowmeter |
| CN101038188A (en) * | 2007-01-31 | 2007-09-19 | 长春锅炉仪表程控设备股份有限公司 | Combined device for measuring wet steam flow and dryness and measuring method thereof |
| JP2009063399A (en) * | 2007-09-06 | 2009-03-26 | Fiberlabs Inc | Optical fiber flow sensor and flow detection system using the same |
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| CN104358560A (en) | 2015-02-18 |
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